Geographic distribution of genetic diversity in populations of Rio Grande Chub Gila pandora

2016 ◽  
Vol 17 (5) ◽  
pp. 1081-1091
Author(s):  
René Galindo ◽  
Wade D. Wilson ◽  
Colleen A. Caldwell
Keyword(s):  
Genetic Diversity ◽  
Geographic Distribution ◽  
Rio Grande

scholarly journals Geographic Distribution of Ryegrass Resistent to the Clethodim Herbicide in Rio Grande do Sul1

2016 ◽  
Vol 34 (2) ◽  
pp. 365-376
Author(s):  
L. VARGAS ◽  
T. SCHNEIDER ◽  
D. AGOSTINETTO ◽  
M.A. BIANCHI
Keyword(s):  
Geographic Distribution ◽  
Annual Cycle ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Action Mechanism ◽  
The North ◽  
Winter Crops ◽  
Glyphosate Herbicide ◽  
Continuous Use ◽  
Selection Of

ABSTRACT Ryegrass is a weed of annual cycle that is present in winter crops, in orchards and vineyards of the South region of Brazil. The species is normally controlled by the glyphosate herbicide, but the continuous use of this product caused the selection of resistant biotypes. The use of ACCase inhibitor herbicides is the main alternative for the control of this species, but it has not been satisfactory in some places, thus causing suspicion of resistance to this action mechanism. Thus, the objective of this paper was to evaluate the occurrence and geographic distribution of ryegrass biotypes that are resistant to the clethodim herbicide in the state of Rio Grande do Sul. For that, seeds of ryegrass plants that survived the application of clethodim were collected in crops from the north region of RS, summing up to a total of 152 samples from 72 cities. The biotypes were submitted to the application of 120 g i.a. ha-1 (maximum registered dose) and 60 g i.a. ha-1 de clethodim (half the maximum registered dose). According to the results, among the samples of ryegrass seeds collected, there were no biotypes resistant to the clethodim herbicide when the maximum registered dose was applied and in the stage of three to four leaves. However, there were biotypes with lower susceptibility that survived half the maximum registered dose.

scholarly journals First report of Dendrorchis retrobiloba Volonterio & Ponce de León, 2005 (Digenea, Gorgoderidae) in Astyanax aff. fasciatus (Cuvier, 1819) (Characiformes, Characidae) from southern Brazil

Check List ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. 357-361 ◽  
Author(s):  
Moisés Gallas ◽  
Laura Roberta Pinto Utz
Keyword(s):  
Ventral Sucker ◽  
Oral Sucker ◽  
Geographic Distribution ◽  
Rio Grande ◽  
Swim Bladder ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
First Report ◽  
Astyanax Fasciatus

Dendrorchis retrobiloba Volonterio & Ponce de León, 2005 was first described from the swim bladder of Astyanax fasciatus (Cuvier, 1819) from Montevideo, Uruguay. In this study, we necropsied specimens of A. aff. fasciatus collected from Lake Guaíba, in Rio Grande do Sul, Brazil, for the analysis of their helminths. The digeneans were identified as D. retrobiloba by their elongated body, oral sucker longer than ventral sucker, and 2 posterior lobes. This is the first report of D. retrobiloba in A. aff. fasciatus from Lake Guaíba and extends the known geographic distribution of this parasite.

scholarly journals New records and geographic distribution map of Pseudopaludicola pocoto (Anura: Leptodactylidae: Leiuperinae) in Northeastern Brazil

2017 ◽  
Vol 1 (2) ◽  
pp. 131 ◽  
Author(s):  
Charles De Sousa Silva ◽  
Igor Joventino Roberto ◽  
Robson Waldemar Ávila ◽  
Drausio Honorio Morais
Keyword(s):  
Key Words ◽  
Geographic Distribution ◽  
New Records ◽  
Rio Grande ◽  
Northeastern Brazil ◽  
Distribution Map ◽  
Caatinga Biome ◽  
Conservation Plans

<p>Fornecemos novos registros e um mapa de distribuição geográfica atualizado de Pseudopaludicola pocoto Magalhães, Loebmann, Kokubum, Haddad &amp; Garda, 2014 para os estados brasileiros do Ceará, Rio Grande do Norte e Pernambuco. O presente trabalho auxilia a preencher lacunas na distribuição desta espécie descrita para o domínio Caatinga, o que pode ser útil em futuros planos de conservação.</p><p><strong>Palavras chave</strong>: Amphibia, Caatinga, neotrópicos, Semi-árido.</p><p><strong>Abstract</strong>: We provide new records and an updated geographic distribution map of Pseudopaludicola pocoto Magalhães, Loebmann, Kokubum, Haddad &amp; Garda, 2014 for the Brazilian states of Ceará, Rio Grande do Norte and Pernambuco. The present work helps to fill gaps in distribution of this recently described species in Caatinga Biome, which can be useful in future conservation plans.<br />Key words: Amphibia, Caatinga, neotropics, Semiarid.</p>

Genetic Diversity and Geographic Distribution of Mus musculus Subspecies Based on the Polymorphism of Mitochondrial DNA

2015 ◽  
pp. 25-40 ◽  
Author(s):  
Hiromichi Yonekawa ◽  
Sumiyo Takahama ◽  
Osamu Gotoh ◽  
Nobumoto Miyashita ◽  
Kazuo Moriwaki
Keyword(s):  
Genetic Diversity ◽  
Mitochondrial Dna ◽  
Geographic Distribution ◽  
Mus Musculus

scholarly journals New record and distribution extension of Phalloceros spiloura Lucinda, 2008 (Cyprinodontiformes: Poeciliidae)

Check List ◽  
2013 ◽  
Vol 9 (6) ◽  
pp. 1545 ◽  
Author(s):  
Karine Orlandi Bonato ◽  
Juliano Ferrer
Keyword(s):  
Geographic Distribution ◽  
New Record ◽  
Rio Grande ◽  
River Basins ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Santa Catarina

Phalloceros spiloura Lucinda, 2008 is known from the coastal drainages of Rio Grande do Sul and Santa Catarina States, Iguaçu and Uruguai river basins. Its geographic distribution is herein extended to a new basin, the Laguna dos Patos system, an isolated costal drainage from Southern Brazil.

An Ecological Study of Lactococci Isolated from Raw Milk in the Camembert Cheese Registered Designation of Origin Area

1998 ◽  
Vol 64 (12) ◽  
pp. 4729-4735 ◽  
Author(s):  
D. Corroler ◽  
I. Mangin ◽  
N. Desmasures ◽  
M. Gueguen
Keyword(s):  
Genetic Diversity ◽  
Geographic Distribution ◽  
Ecological Study ◽  
Raw Milk ◽  
Randomly Amplified Polymorphic Dna ◽  
Histidine Biosynthesis ◽  
Subspecies Level ◽  
Camembert Cheese ◽  
Reference Strains ◽  
Origin Area

ABSTRACT The genetic diversity of lactococci isolated from raw milk in the Camembert cheese Registered Designation of Origin area was studied. Two seasonal samples (winter and summer) of raw milk were obtained from six farms in two areas (Bessin and Bocage Falaisien) of Normandy. All of the strains analyzed had a Lactococcus lactis subsp.lactis phenotype, whereas the randomly amplified polymorphic DNA (RAPD) technique genotypically identified the strains as members of L. lactis subsp. lactis orL. lactis subsp. cremoris. The genotypes were confirmed by performing standard PCR with primers corresponding to a region of the histidine biosynthesis operon. The geographic distribution of each subspecies of L. lactis was determined; 80% of the Bocage Falaisien strains were members ofL. lactis subsp. lactis, and 30.5% of the Bessin strains were members of L. lactis subsp.lactis. A dendrogram was produced from a computer analysis of the RAPD profiles in order to evaluate the diversity of the lactococci below the subspecies level. The coefficient of similarity for 117 of the 139 strains identified as members of L. lactis subsp.cremoris was as high as 66%. The L. lactis subsp. lactis strains were more heterogeneous and formed 10 separate clusters (the level of similarity among the clusters was 18%). Reference strains of L. lactissubsp. lactis fell into 2 of these 10 clusters, demonstrating that lactococcal isolates are clearly different. As determined by the RAPD profiles, some L. lactis subsp.lactis strains were specific to the farms from which they originated and were recovered throughout the year (in both summer and winter). Therefore, the typicality of L. lactissubsp. lactis strains was linked to the farm of origin rather than the area. These findings emphasize the significance of designation of origin and the specificity of “Camembert de Normandie” cheese.

scholarly journals Reptilia, Squamata, Leiosauridae, Urostrophus vautieri Duméril and Bribon, 1837: distribution extension, new state record, and geographic distribution map

Check List ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 432
Author(s):  
João Luiz Gasparini ◽  
Diogo Andrade Koski ◽  
Pedro L.V. Peloso
Keyword(s):  
Geographic Distribution ◽  
Rio De Janeiro ◽  
Rio Grande ◽  
First Record ◽  
Minas Gerais ◽  
The State ◽  
Rio Grande Do Sul ◽  
Distribution Map ◽  
Santa Catarina ◽  
The North

We present the first record of Urostrophus vautieri for the state of Espírito Santo and a distribution map for the species. This species was previoulsy known from the states of Minas Gerais, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, and Rio Grande do Sul. The present record represent an extension of nearly 200 km to the North from the nearest published record for the species.

scholarly journals A new Hasemania Ellis from the upper rio Paraná basin, with the redescription of Hasemania crenuchoides Zarske & Géry (Characiformes: Characidae)

2015 ◽  
Vol 13 (3) ◽  
pp. 479-486 ◽  
Author(s):  
Jane Piton Serra ◽  
Francisco Langeani
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Phylogenetic Relationships ◽  
Rio Grande ◽  
Minas Gerais ◽  
Dorsal Fin ◽  
Rio Grande Basin ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin

A new Hasemania species is described from the headwaters of the rio Uberaba, rio Grande basin, State of Minas Gerais, Brazil. The new species is distinguished from its congeners by a combination of a black, vertically-elongate humeral spot, a single ossification in the position primitively occupied by infraorbitals four and five, four teeth on the inner series of premaxilla, and scales covering the anal-fin base. Hasemania crenuchoides is redescribed and its known geographic distribution is extended; it can be differentiated from other species of the genus by the combination of a black vertically-elongate humeral spot, ii,8 dorsal-fin rays, 11-14 branched anal-fin rays, the presence of separate infraorbitals four and five, and the presence of scales covering the anal-fin base. Phylogenetic relationships of H. crenuchoides and the new species within Hasemania are discussed.

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